/**
 * 
 */
package com.distribute.application.api.utils;

import java.text.ParseException;
import java.util.Calendar;
import java.util.Date;

import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 日期工具类, 继承org.apache.commons.lang.time.DateUtils类
 * @author yyb
 * @version 2014-4-15
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
	
	private static String[] parsePatterns = {
		"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", 
		"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
		"yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

	/**
	 * 得到当前日期字符串 格式（yyyy-MM-dd）
	 */
	public static String getDate() {
		return getDate("yyyy-MM-dd");
	}
	
	/**
	 * 得到当前日期字符串 格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String getDate(String pattern) {
		return DateFormatUtils.format(new Date(), pattern);
	}
	/**
  	 * 获得当天0点时间
  	 * @return
  	 */
  	public static long getTimesmorning(){
  	Calendar cal = Calendar.getInstance();
  	cal.set(Calendar.HOUR_OF_DAY, 0);
  	cal.set(Calendar.SECOND, 0);
  	cal.set(Calendar.MINUTE, 0);
  	cal.set(Calendar.MILLISECOND, 0);
  	return (long) (cal.getTimeInMillis()/1000);
  	}
  	/**
  	 * 获得当天0点时间
  	 * @return
  	 */
  	public static Date getTimesmornings(){
  	Calendar cal = Calendar.getInstance();
  	cal.set(Calendar.HOUR_OF_DAY, 0);
  	cal.set(Calendar.SECOND, 0);
  	cal.set(Calendar.MINUTE, 0);
  	cal.set(Calendar.MILLISECOND, 0);
  	return  cal.getTime();
  	}
  	/**
  	 * 获得几天前零点
  	 * @param d
  	 * @param day
  	 * @return
  	 */
  	public static Date getDateBeforeZroe(Date d,int day){
  	  	Calendar now =Calendar.getInstance();
  	  	now.setTime(d);
  	  	now.set(Calendar.DATE,now.get(Calendar.DATE)-day);
  	    now.set(Calendar.HOUR_OF_DAY, 0);
	  	now.set(Calendar.SECOND, 0);
	  	now.set(Calendar.MINUTE, 0);
	  	now.set(Calendar.MILLISECOND, 0);
  	  	return now.getTime();
  	}
  	public static Date getDateBefore(Date d,int day){
  	  	Calendar now =Calendar.getInstance();
  	  	now.setTime(d);
  	  	now.set(Calendar.DATE,now.get(Calendar.DATE)-day);
  	  	return now.getTime();
  	}
     public static Date getDateAfter(Date d,int day){
  	  	Calendar now =Calendar.getInstance();
  	  	now.setTime(d);
  	  	now.set(Calendar.DATE,now.get(Calendar.DATE)+day);
  	  	return now.getTime();
  	  	}
  	public static boolean isSameDate(Date date1, Date date2) {
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(date1);

        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(date2);

        boolean isSameYear = cal1.get(Calendar.YEAR) == cal2
                .get(Calendar.YEAR);
        boolean isSameMonth = isSameYear
                && cal1.get(Calendar.MONTH) == cal2.get(Calendar.MONTH);
        boolean isSameDate = isSameMonth
                && cal1.get(Calendar.DAY_OF_MONTH) == cal2
                        .get(Calendar.DAY_OF_MONTH);

        return isSameDate;
    }
  	/**
  	 * 获得当天24点时间
  	 * @return
  	 */
  	public static long getTimesnight(){
  	Calendar cal = Calendar.getInstance();
  	cal.set(Calendar.HOUR_OF_DAY, 24);
  	cal.set(Calendar.SECOND, 0);
  	cal.set(Calendar.MINUTE, 0);
  	cal.set(Calendar.MILLISECOND, 0);
  	return (long) (cal.getTimeInMillis()/1000);
  	}
  	/**
  	 * 获得当天24点时间
  	 * @return
  	 */
  	public static Date getTimesnights(){
  	Calendar cal = Calendar.getInstance();
  	cal.set(Calendar.HOUR_OF_DAY, 24);
  	cal.set(Calendar.SECOND, 0);
  	cal.set(Calendar.MINUTE, 0);
  	cal.set(Calendar.MILLISECOND, 0);
  	return cal.getTime();
  	}
	/**
	 * 得到日期字符串 默认格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String formatDate(Date date, Object... pattern) {
		String formatDate = null;
		if (pattern != null && pattern.length > 0) {
			formatDate = DateFormatUtils.format(date, pattern[0].toString());
		} else {
			formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
		}
		return formatDate;
	}
	
	/**
	 * 得到日期时间字符串，转换格式（yyyy-MM-dd HH:mm:ss）
	 */
	public static String formatDateTime(Date date) {
		return formatDate(date, "yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * 得到当前时间字符串 格式（HH:mm:ss）
	 */
	public static String getTime() {
		return formatDate(new Date(), "HH:mm:ss");
	}

	/**
	 * 得到当前日期和时间字符串 格式（yyyy-MM-dd HH:mm:ss）
	 */
	public static String getDateTime() {
		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * 得到当前年份字符串 格式（yyyy）
	 */
	public static String getYear() {
		return formatDate(new Date(), "yyyy");
	}

	/**
	 * 得到当前月份字符串 格式（MM）
	 */
	public static String getMonth() {
		return formatDate(new Date(), "MM");
	}

	/**
	 * 得到当天字符串 格式（dd）
	 */
	public static String getDay() {
		return formatDate(new Date(), "dd");
	}

	/**
	 * 得到当前星期字符串 格式（E）星期几
	 */
	public static String getWeek() {
		return formatDate(new Date(), "E");
	}
	
	/**
	 * 日期型字符串转化为日期 格式
	 * { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", 
	 *   "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm",
	 *   "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm" }
	 */
	public static Date parseDate(Object str) {
		if (str == null){
			return null;
		}
		try {
			return parseDate(str.toString(), parsePatterns);
		} catch (ParseException e) {
			return null;
		}
	}

	/**
	 * 获取过去的天数
	 * @param date
	 * @return
	 */
	public static int pastDays(Date date) {
		long t =date.getTime()- new Date().getTime();
		return (int)(new Double(t/(24*60*60*1000))).intValue();
	}
	/**
	 * 获取两个时间天数
	 * @param date1  大的时间
	 * @param date2 小的时间
	 * @return
	 */
	public static int towDateDays(Date date1, Date date2) {
		long t =date1.getTime()- date2.getTime();
		return (int)t/(24*60*60*1000);
	}
	/**
	 * 获取过去的小时
	 * @param date
	 * @return
	 */
	public static long pastHour(Date date) {
		long t = new Date().getTime()-date.getTime();
		return t/(60*60*1000);
	}
	
	/**
	 * 获取过去的分钟
	 * @param date
	 * @return
	 */
	public static long pastMinutes(Date date) {
		long t = new Date().getTime()-date.getTime();
		return t/(60*1000);
	}
	
	/**
	 * 转换为时间（天,时:分:秒.毫秒）
	 * @param timeMillis
	 * @return
	 */
    public static String formatDateTime(long timeMillis){
		long day = timeMillis/(24*60*60*1000);
		long hour = (timeMillis/(60*60*1000)-day*24);
		long min = ((timeMillis/(60*1000))-day*24*60-hour*60);
		long s = (timeMillis/1000-day*24*60*60-hour*60*60-min*60);
		long sss = (timeMillis-day*24*60*60*1000-hour*60*60*1000-min*60*1000-s*1000);
		return (day>0?day+",":"")+hour+":"+min+":"+s+"."+sss;
    }
	
	/**
	 * 获取两个日期之间的天数
	 * 
	 * @param before
	 * @param after
	 * @return
	 */
	public static double getDistanceOfTwoDate(Date before, Date after) {
		long beforeTime = before.getTime();
		long afterTime = after.getTime();
		return (afterTime - beforeTime) / (1000 * 60 * 60 * 24);
	}
	
	/**
	 * @param args
	 * @throws ParseException
	 */
	public static void main(String[] args) throws ParseException {
//		System.out.println(formatDate(parseDate("2010/3/6")));
//		System.out.println(getDate("yyyy年MM月dd日 E"));
//		long time = new Date().getTime()-parseDate("2012-11-19").getTime();
//		System.out.println(time/(24*60*60*1000));
	}
}
